Frequently asked questions from our certified technicians

Frequently asked questions.

What does a bad furnace blower motor sound like?

Thumping: Thumping and vibrating sounds are the results of an unbalanced blower wheel. Humming: If you hear humming but your furnace is functioning correctly, you likely have a loud transformer. Squealing: A lack of lubricant or a loose fan belt can cause high-pitched squealing.